Safety razor



Qt.1,1935. H.W.UHL 2,015,825l

SAFETY RAZOR l l Filed Aug. 26, 1931 vom .-l .Y M N "3h ma N lNvENToR d Y HENRYw UHL "l 4Patented Qct. 1,' 1935 SAFETY RAZOR Henry W. Uhl, Dobbs Ferry, N. Y.

Application August 26,

17 Claims.

This invention relates to safety razors and lmoreparticularly to safety razors which are provided with means by which the razor blade may be sharpened without removing the blade from the holder and"it is an'object of this invention to provide an improved device of the type described in which means are provided which may be readily operated to sharpen the blade without removing the blade and which means is normally so held as not to interfere with the ordinary use of the razor. It is also an object of this invention to provide in a razor of the type described a means which sharpens both edges of `a double edged blade simultaneously.

In the drawing- Fig. 1 is a view in section of a safety razor constructed in accordance with this invention, the parts being shown as positioned for use;

Fig. 2 is a view partly in section and partly blade and its holding means being shown rotated relatively to the guard as in sharpening the blade;

Fig. 3 is a view similar to Fig. 1 of a modified construction;

Fig. 4 is a view in elevation of a part used in the modification shown in Fig. 3;

Figs. 5 and 6 are views in elevation and plan, respectively, of the blade holder or support shown in Figs. 1 and 2;

Fig. '7 is a View in section of a modified construction of the sharpening means; and

Figs. 8 and 9 are views in section of parts shown in Figs. 1 and 2. l

r As shown in Figs. 1 and 2 of the drawing a 0 razor'constructed in accordance with this invention and arranged for Vuse with double-edged blades comprises an inner tube I having a portion at one end of greater internal diameter to form a recess in which is mounted the collar 2 formed integral with the bladel holder or support 4. Lugs 5 formed integral with the collar 2 and engaging in corresponding notches in the end of the tube I hold the blade support 4 fixed with respect to the tube I. Mounted within the tube I is aV rod 6 threaded at one end to receive a blade retainer 8 which is formed with spaced openings to receive the lugs 9 on the blade holder 4 which hold and position the blade' III and the retainer 8. l l l l I 50 Adjacent the threaded end, the rod s is formed with a hemi-spherical groove I I in which is fitted a lock Washer I2 of circular cross section which engages in` the recess formed in tube I.

. Surrounding the inner tube I is anV outer tube or barrel I4 having a blade guard I6 attached at in elevation of the razor shown in Fig. 1, the

1931, Serial No. 559,549

one end thereof. The center portion of the guard I6 is shaped to form a rectangular trough having parallel side walls Il .extending longitudinally of the blade guard at opposite sides thereof. Y 'Fixed within the barrel I4 is an annular collar 5 or bushing I8 forming a seat for a spool or sleeve` 23 which surrounds the tube I and is flanged at both ends. Mounted on the sleeve 20 is a spring 22 which is confined between the inner flange of the sleeve 2E) and the bottom of a blade sharpenl0 ing or treating means 24 positioned in the trough formed in the blade guard I6. The spring 22 normally holds` the blade treating means 24 against the outer flange of the sleeve 20 thereby limiting its movement to avoid displacement of 15 the bladeholder "4 fromits seat although maintaining the desired tension on the blade treating means 24. Further, it will be noted, the blade treating means 24 intersects the plane of the cutting edges of the blade I0 held by the blade 20 support 4 and the blade retainer 8.

At their opposite ends the tube I and rod I` project beyond the end of the barrel I4 and in the end of the barrel I4 is fitted a shouldered bushing 26 which serves as a seat for one end of a 25W i spring 28 confined between the bushing 26 and a collar 30 fitted in a groove in the outer face of the tube I; Bushing 26, integral with barrel I4, is pressed against the collar 38 fitted into a recess in tube I and thereby maintains the relative 30 position of guard I6 and blade holder 4. The end portion of the tube I is slotted, as at 29, to receive inwardly projecting lugs 3I formed on a sleeve 32 which is over sufcient length to overlap the end of the bushing 26 and is formed 35 with inwardly projecting lugs 33 engaging in slots 34 in the bushing 26. Y

A `spring 36 confined between the sleeve 32 and a collar 38 tends to force the sleeve 32 outwardly but a knob or ball 40 pressed on the projecting end of the rod 6 limits the outward movement of the sleeve 32 to a position in which the lugs on the sleeve 32 are in engagement in the slots in the tube I and the bushing 26. With the sleeve 32 in this position the barrel. I4 is held against rotation relative to the tube I. Inwardly of the lugs 33 the sleeve 32 has a portion with an internal diameter greater than that of the shouldered portion of the bushing 26 and of sufficient length to receive the shouldered portion of the bushing.

The end of the barrel I4 adjacent the bushing 26 is of Vreduced external diameter so `that the sleeve may bemoved axially against the action of spring 36` to disengage the lugs 33 from the slots 3d thus disengaging the sleeve 32 from the barrel i@ while retaining the sleeve 32 connected to the tube l. With the sleeve 32 in this position the barrel M can be rotated relatively to the tube l, thus rotating the blade sharpening or treating means 2 with respect to the blade Il) and sharpening the blade. As the blade I0 contacts with the sharpening or treating means 24 the sharpening means 24 is moved along the tube l against the action of spring 22 which thereafter causes the sharpening means 2li to bear-against the blade l0 with suitable pressure.

As the slots 3d in the bushing 25 and the lugs there are but two positions in which the sleeve 32 and bushing 26 may engage and'in both of these positions the blade il) and guard il are properly positioned for use.

The blade holder d is shaped to present a curved surface to the blade l!) so that the blade l E3 is bent in the usual way when secured between the holder i and retainer 3. If desired narrow reinforcing ribs 42 may be formed integral with the blade holder the ribs being of such dimensions that they perform no function in the positioningof the blade it. Where the ribs l2 are used, the blade retainer 3 will be grooved to receive the ribs.

While the blade sharpening or treating means may comprise a single block or piece of suitable material shaped to lt the trough in the blade guard it and formed with an opening to iit the sleeve 2l! as shown in Figs. l and 2, the blade treating means may be formed oi a plurality of pieces il and "36, as shown in Fig. 7. These pieces may be of the same or different materials, suit-able for honing or stropping the blade as described, and are. cemented or otherwise secured in a pan 133 which is .formed with an opening to receive the sleeve 2Q.

To operate the structure shown in Figs. l and 2 to sharpen the blade I ll the sleeve 32 is moved axially on the tube l and barrel it toward the blade end until further movement of the sleeve 32 is prevented by the engagement of the lugs 3l with the ends of the slots in the tube l. The sleeve 32 is now disengaged from the barrel Mi and the blade treating means 24 can be rotated to sharpen the blade lil. After the blade l@ is sharpened the sleeve 32 and barrel I4 are rotated relatively until the lugs 33 on sleeve 32 again engage in the slots 3d in bushing 26, whereupon the sleeve 32 is released and the spring 3S returns the parts to their normal positions.

In the modiiication shown in Fig. 3, the inner tube 553 has a portion of reduced .diameter at one end forming a shoulder against which the bladeV support 52 is seated. Within the tube 5@ is a rod 5t having a threaded end portion 55 of increased diameter which engages the end of the tube 5S and which is screwed into a correspondingly threaded opening in -a blade retainer 5t. The blade le is secured between the holder 52 and retainer 56 and the holder 512 engages the tube 50, blade lil and blade retainer 56 as in the other construction.

Surrounding the tube El? is an outer tube or barrel 58 towhich is secured the blade guard 6l). The barrel 58 is formed with an inwardly extending shoulder t2 which engages with'a shoulder 66 on the tube 5@ to'limit movement of thebarrel ,shoulder 62 and a sleeve 63 threaded onV the end on the sleeve 32 are diametrically arranged' of the tube Sti. The rod 5d projects beyond the end of the tube 56 and is threaded to receive a nut Eil which serves to hold the rod in the tube 5l).

Adjacent the bladev end there is a sleeve 12 which fits between the tube 5B and barrel 58 and 5 carries a blade treating means lli, shown as of spring metal although it may be formed as shown in Fig. 1 or Fig. 7. The inner end of the sleeve 'E2 bears against the shoulder 6a and the sleeve 'E2 is of such length that the blade treating means 10 lli intersects the plane of the blade edges. The sleeve i2 is provided with a slot 'i6 through which extends a pin 'i8 which is fixed in the barrel 58 and engages in a straight slot in the tube 58. Theengagement of the pin TS in the slot of 15 tube permits relative axial movement of the barrel 53 and tube 5l! which prevents relative rotationy thereof. The slot 'l in sleeve 'l2 has its upper portion, as seen in Fig. 4, straight while the remainder of the slot is of spiral shape. The 20 straight portion of the slot l permits of the withdrawal of the guard 69 from the region 01E the blade le and blade treating means 'ill beforeY the engagement of the pin i8 in the spiral portion of the slot 'l5 causes the sleeve l2 to be 25 rotated, bringing the blade treating means-14 into engagement with the bla-de IG. Returning the barrel 58 to the position in which it is normally held by the spring returns the blade treating means 'it to the position shown in Fig. 3 30 and puts te various parts in position for use. To operate this modification the barrel 58 is reciprocated axially.

What is claimed is:

l.. Ina safety razor for double edged blades, a 35 double-edged blade, a blade carrier, a blade guard and blade treating means mounted on said guard, and means supporting said blade guard for rotation relatively to the blade carrier4 to apply said blade treating means to the blade edges. 40

2. in a safety razor, a blade, a blade carrier, a blade guard, a blade treating means carried by said guard, means supporting said guard and carrier for relative rotation about an axis normal to saidbl-ade treating means and means lock- 45 ing said carrier and. guard againstrelative rotation, said locking means being releasable to permit application of said bladetreating means to Said blade by relative rotation ofsaid carrierk and guard. 50

3. In a safety razor, a blade, a blade guard, blade treating means, means supporting said blade and blade treating means for relative rotation about. anaxis normal to said blade treating means and a connection between said blade treating means and guard operative to rotate said blade treating means in contact with said blade upon movement of said guard from and to guarding position.

.4. In a safety razor, a blade, a blade guard, 60 blade treating' means between said blade and guard, means supporting said blade and blade treating means for relative rotation about an axis normal to-said blade treating means and a connection between said blade treating means and guard operative to rotate said blade treating means in contact with said blade upon movement' of said guard.

5. In a safety razor, a blade carrier, a blade mounted thereon, a blade guard, blade treating means carried by said guard, means supporting said carrier and guard forY relative rotation about an axis norm-alto said blade treating means to apply said blade treating means to the blade and 75 means yieldingly holding said blade treating means in contact With the blade.

6. In a safety razor for double edge blades, a blade carrier, a blade mounted thereon, a blade guard having a channel therein, means supporting said carrier and guard for relative movement and blade treating means carried in said channel and engaging both edges of said blade simultaneously upon relative movement of said carrier and guard.

'7. In a safety razor, a blade, a blade carrier, a support for said blade carrier, a blade guard, blade treating means mounted to move With said blade guard, a` carrier for said guard rotatably mounted on said blade carrier support and a sleeve on said blade carrier support interlocking with said blade carrier support and guard carrier to prevent relative rotation of said blade carrier support and guard carrier, said means being shiftable to free said blade carrier support Yand guard carrier for relative rotation 'whereby said blade treating means may be applied to said blade.

S. In a safety razor, a blade, a blade carrier, a support for said blade carrier, a blade guard having a centrally disposed longitudinally extending recess, a blade treating means mounted in' said recess, a carrier for said guard rotatably mounted on said blade carrier support and means interlocking with said blade carrier support and guard carrier to prevent relative rotation thereof, said means being movable to permit relative rotation of said blade carrier support and -guard carrier and application of said blade treating means to said blade.

`9. In a safety razor, a blade, a blade carrier, a blade guard having a longitudinally extending recess thereimmeans supporting said carrier and guard for relative rotation and blade treating means mounted in said recess and rotatable with said guard to engage said blade.

l0. In a safety razor, a blade, a blade carrier, a support for said blade carrierfa blade guard, a carrier for said guard surrounding said blade carrier support and a sleeve on said blade carrier support interlocking with said blade carrier support and guard carrier to hold said guard positioned with respect to said blade.

ll. In a safety razor, a blade, a blade carrier holding said blade bent, a blade guard having a centrally disposed longitudinally extending recess, blade treating means carried by said guard and having the blade engaging surface thereof lying between the blade and the common plane of the blade edges and means supporting said blade carrier and guard for relative rotation to apply said blade treating means to the blade and remove it therefrom.

l2. In a safety razor, a blade, a blade carrier blade edges, said carrier and guard being rela- 5 tively rotatable to 'engage said blade treating 'means with said blade.

i3. In a safety razor, a blade, a blade carrier holding said blade bent, a blade guard having a centrally disposed longitudinally extending recess and blade treating means carried by said guard and intersecting thev common plane of the blade edges, said carrier and guard being relatively rotatable to engage said blade treating means with said blade and yielding means determining the engaging pressure of said blade and blade treating means.

i4. In a safety razor, a blade, a support for said blade having a stem, a blade guard mountted for movement axially of said stem from and to guarding position, blade treating means, means supporting said blade and blade treating means for relative rotation and a connection between said blade treating means and guard operative to rotate said blade treating means in contact with said blade upon axial movements of said guard.

i5. In a safety razor, a blade, a support for said blade having a stem, a blade guard mounted for movement axially of said stem, blade treating means between said blade and guard, means supporting said blade and blade treating means for relative rotation and a connection between said blade treating means and guard operative to rotate said blade treating means in Contact with said blade upon movement of said guard.

-16. In a safety razor, a blade, a blade guard, blade treating means, means supporting said blade and blade treating means for relative rotation abo-ut an axis normal to said blade treating means and a connection between said blade guard and blade treating means operative to effect relative rotation of said blade and blade treating means to engage said blade and blade treating means upon movement of said guard.

17. In a safety razor, a blade, a carrier for said blade, a guard for said blade, blade treating means carried by said guard and having the blade engaging surface thereof lying between the body of the blade and a plane extending through the edge of the blade parallel to the blade engaging surface, means supporting said blade carrier and guard for relative rotation to apply said blade treating means to the blade and means yieldingly holding said blade and blade treating means in contact upon relative rotation of said blade carrier 'and guard.

HENRY W. UHLL 

